I'm going to have to disagree on that one. My own issue of LTC-MINING was only 1000 shares but I knew going into it that I had to trust GLBSE for the whole process to work for the lifespan of the asset. I thought about it, did some research, and decided that I could trust GLBSE to be available long term. Nefario was actively developing on it, progress was being made on outstanding issues, he was posting to the forums regularly, etc. I even went through all the "what if" scenarios in my head and decided that even if he decided to shut down, it would be easy for him to give a weeks warning, I'd buy back all the issues per my asset's contract, and be done. Thus I very intentionally and deliberately extended trust to GLBSE to perform their end of the bargain, which was made in exchange for 8 BTC up front, and a percentage of trades thereafter.
Everyone that used it extended trust to GLBSE, especially the asset issuers.